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Finding the Third Proportional to 129,009,360 and 278,541,600

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Solution

The third proportional to 129,009,360 and 278,541,600 is: 601,393,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,009,360 : 278,541,600 = 278,541,600 : x
  2. Step 2: Convert to fraction form
    129,009,360/278,541,600 = 278,541,600/x
  3. Step 3: Cross multiply
    129,009,360x = 278,541,600 × 278,541,600
  4. Step 4: Simplify right side
    129,009,360x = 77,585,422,930,560,000
  5. Step 5: Solve for x
    x = 77,585,422,930,560,000/129,009,360
  6. Step 6: Final answer
    x = 601,393,751.05

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.